Wheel



0. W. MOTT.

WHEEL.

APPLICATION FILED OCT. 29,1920.

1,403,439, Patented Jan. 10, v1922.

UNITED STATES PATENT OFFICE.

OTIS W. MOT'IEOF JACKSON, MICHIGAN.

WHEEL.

Specification of Letters Patent. Patented Jan, 10, 1922,

Application ledictober 29, 1920. Serial No. 420,335.

the construction of the same whereby the i fixed rim may havel spokes ofsufiicient size readily attached thereto in such a position that thedemountable or tire carrying rim may be substantially centrally. locatedwith respect to the vertical plane through thc centers of the. spokesalthough this construction can be advantageously used with disk or wirewheels.

Further objects are the provision of a i fixed rim which will provide asubstantially cylindrical seat for the outer edge of the demountable ortire carrying rim, and the locating of such seat within the flat portionof the inner periphery of the rim. so that standard types of tirecarrying rims may preferably be used instead ofY special shapes orconstructions.

Another feature of the construction allows the periphery of the outersupporting flange to be maintained within very close limits as the shapeof the outer member of the channel allows the metal to flow sufficientlyto compensate for variations in original size of stock. This same formof outer member also provides additional stiffness in the fixed rim,allowing lighter stock to be used and at the same time providingstrength for the 'radial thrusts of spokes and wedges or clamps and italso furnishes a bearing support or fulcrum for such clamps. To theaccomplishment of the foregoing and related ends, said invention, then,consists of the means hereinafter fully described and particularlypointed out in the claims.

The annexed drawing and the following description set forth in detailcertain mechanism embodying the invention, such dis-A closed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.

In said annexed drawing Fig. 1 is a sectional view through a wheelembodying my invention; and Fig. 2 is a perspective. view of a portionof the fixed Ilm.

In the drawings, there is shown a portion of a wheel having spokes 1which are attached to a fixed rim 2, which supports a demountable ortire carrying rim 3 which may be of any suitable type. but here shown asa clincher type of rim.

This fixed rim is made of a channel section, the base portion 5 havingsuitable apertures 24 to receive the spokes 1 which are forced throughthese apertures into position.

There a wire or disk type of wheel is used, the fixed rim will have thedisk or wires comprising the wheel body attached in any suitable`manner. flange 7 extends upwardly at substantially a right angle to thebase portion and is then bent outwardly to form a rim receiving fiance 8which receives the tire carrying rim 3. z"The outer fiange of the fixedrim is formed with a bulging portion 9 adjacentthe base portion and thenextends upwardly to form an outer flange 10 on the side of the wheelaway from the vehicle.

The upper surface of this flange 10 is adapted to present a cylindricalsurface to the rim 3 and may be of such diameter as to support rim 3. Tohold the rim in place clamping members 11 are employed. which aremounted on bolts 12 extending through suitable apertures 13 in the fixedrim and held in position in such apertures in any suitable manner. Theclamping members 11 themselvesare provided with an upper rim engagingportion 14 and have an aperture 15 to receive the bolts. the lower endsbeing provided with a recess 16 adapted to contact or engage with thebulging portion of the fixed rim to form a support for the clam and alsoprevent radial movement of t-he same. Nuts 17 are employed to move theclamping members into engagement with the rim.

The form of fixed rim is importantand the use of the bulging portionallows the base of the fixed rim to be made wide enough to receivespokes of any desired size. As each spoke supports the fixed rim uponthe flat portion 22 surrounding the reduced portion 23 which fitsthrough the aperture in the fixed rim, the additional width'of baseportion of the rim allows spokes of large size to be employed. givinglarge area to the supporting portions 22. Furthermore,

The inner annular l by forming the bulge, the upper portion of thesupporting flange above the bulge 1s lbrought underneath the rim 3 sothat it may contact the rim on the flat central surface of the same andnot under the. curved bead diameter must be kept within very close.

limits. This is readily accomplished in the present form as the top ofthe flange may be rolled or upset in correct relation, 'the bulgeincreasing or decreasing slightly to allow for variation in originalwidth of metal employed for the fixed rim. lThe bulge also increases thestrength of the rim allowing light material to be employed withoutdecreasing strength and is particularly adapted to take the thrust fromspokes and wedges or clamps as well as forming a support therefor. V

Other modes of applying the principle of my invention may be Yemployedinstead of the one explained, change being made as re gards themechanismI herein disclosed, provided the means stated by any of thefollowing claims or the equivalentof such stated means be employed.

I therefore.particularly point out and distinctly claim as my inventionl. A fixed rim of channel form for vehicle wheels comprising a. baseportion adapted to receive the wheel body, an upstanding flange on theinner side adapted to act as a seat for the tire Carrying rim and aflange on the outer side, said'latter flange at its upper edge beinginset from the outer edge of the base and being connected thereto by abulge ing portion of the flange.

2. In a fixed rim ofchannel form for vehicle wheels, the combination ofa base portion adapted to reoeivethe Wheel body,

an upstanding rim receiving flange on the inner side provided with acurved rim receiving portion and a supporting flange on the other side,the supporting surface of said latter flange being inset from the edgeof said base to support the rim under the flat surface of the same, saidsupporting flange bulging outwardly near the base portion to allow thewheel body to be substantially7 centrally mounted in said base andcentrally of the tire carrying rim.

3. In a fixed rim of channel form for vehicle wheels, the combination ofa base portion adapted to receive the spokes of the. wheel, anupstanding rim receiving flange on the inner side provided with a curvedrim receiving portion and a supporting flange on the other side, thesupporting surface of said latter flange being inset from the edge ofsaid base to support the rim under the flat surface of the same, saidsupporting flange being connected to said base byan'outyvardly bulgingportion adapted to act as a support for clamping means and adapted toallow the base portion to receive the spokes in a plane passingsubstantially through the center of the tire receiving rim.

l. In a fixed rim of channel form for vehicle wl1eels,'havingdemountable rims, the combination of a base portion wider than the flatunder surface of the demountable rim, an upstanding rim receiving flangeon the inner side provided with a curved rim receiving portion, asupporting flange on the othei` side inserted from the edge of the baseyto lie under and support the flat surface of the demountable rim, `saidlatter flange being connected to said base by an integral bulgingportion; such bulge being adapted to give the necessary width to saidbase to receive large spokes and at the same time allowing saidsupporting flange to be inset.

Signed by me, this 20th day ofOctober, 1920.

oTIs W. MoTT.

soy

